Lead-pencil



F. J. YOUNG.

LEAD PENCIL.

APPLICATION HLED JUNE :9. 1919.

1 09,929. Patented July 15, 1919.

' INVENTOR.

[2 Arm EY FREDERICK J. YOUNG, 0! LOS ANGELES, CALIFORNIA.

. LEAD-PENCIL.

Specification of Letters Patent.

Patented July 15, 1919.

Application filed June 19, 1918. Serial No. 241,697.

To all whom it may concern:

Be-it known that I, FREDERICK J. YOUNG, a' citizen of the United States, residing in the city of Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Lead-Pencils, of which the following is a specification.

My invention relates broadly to lead pencils and more particularly to a form of encil having a tubular body adapted to ad ustably support the leads in the point thereof, so that they maybe extended for-use and retracted within the body when not in use.

I am aware that atents have been issued for lead pencils em odying the broad principles hereinabove stated, but I am not aware that any one has even known or used myimprovements as hereinafter set forth and described.

In devices of usually su ported in a. of the b0 y and means is provided at the head of the body, whereby the lead may be extended and retracted through an opening in the point of the body. It is a common occurrence in the use of this character of pencil for the lead to break inside of the this character, a lead is holder at the point point of the body for the reason that it is not supported at all times in true alinement with the body, and is capable of more or less movement therein. 7

It is an object, therefore, of my invention to provide means within the body for posi and rendering tively centering the lead therein at all times, whether extended or retracted, sothat this breakage may not occur.

A further object of my provide a body composed of separable members frictionally held together, thus aflording a ready access to the interior of the body,

the same capable of assembling and disassembling with facility.

Another object is to provide positively ceninvention is to tered end members for he tubular body, one of said members being threaded to 'receive a lead-holder, and the other of said members being bored to receive the stem of said holder and arranged so as to insurethe turning of the holder when the member is turned, thus moving the holderun and out of the other member for extending and retracting the lead.

Another object of my invention is to provide a pencil of the character descr1bed,'of

' drawings,

' section of the point simple design, and capable of being manufactured at a minimum cost, and possessing features which insure a maximum of effic1en cy. Other objects will appear as the descrlptlon progresses.

In order to carry out the aforesaid obects, the design of the structure employed may be varied, but in the accompanying forming a part of this applicacation, I have illustrated a preferred embodiment of my invention, which I will now describe.

In the drawings:

Figure 1 is a longitudinal view of my im-- proved pencil, partly broken away at points to show the interior;

Fig. 2 is a longitudinal section thereof 3 is an end view of the point; F g. 4 is an end view of the head;

Figs. 5, 6, 7, 8, 9, 10 and 11, respectively,

are transverse sections of my invention on lines 5-5; 6-6; 7-7 8--8'; 9--9; 10-10 and 11-11 of Fig. 2; Fig. 12 is a ragmentary longitudinal of the pencil showing the holder substantially retracted in the shell, extended for use, such as would be the case when a. new lead is inserted in the holder.

Similar characters of reference are employed in the tionally fitgthe interior of the body member 1 and e tends substantially thereinto, so as to be held firmly in the body 1. Al", the

opposite end of the body 1, I provide a head 6, whichhas a substantially elongated stem 7,ext end1ng into and-adapted to fit the interior of the body 1,- the central portion of which is ofjequal diameter to that of the.

body 1, thus provided a shoulder adapted to fit against, the end of the body, and the opposite end of this member is provided with a threadedextension 8 of reduced diameter, which is adapted to--receive head 9. The said head may be enlarged, asshown, near the outer end and knurled orserrated on its p ph y o t at. it my e s y. tu d but not fully so, and with the lead device illus specification and throughout "the several views of the drawings for indicating the same or like parts.

'into engagement with the shoulder at the end of the thread portion 8, the thread on portion 8 having a right handlead, so that whenthe head 9 is turned to the right, the

member 6 will also be turned thereby. I A bore 10 is provided in the exact center of the member 6 and extends entirely thereadapted to closely fit the bore of the 1', and the lower end of the holder is provided with an elongated threaded the internally. threaded bore 16 of the bottom end member 3, this bore extendingjsubstantially into said When the head 9 through, and this bore may be-of square or rectangular cross section, or it may be round as shown. with angular-grooves 11 formed on the four quarters of the circle,'thus substantially providing a keyway tolslightly receive a holder 13. v The main body 13 of the lead holderjmay ave an enlargement 14, formed thereon adapted to be threadedinto bottom member, and a substantially smaller bore being rovided. in the pointed emd thereof to slidably and rotatably recelve a lead 17, which is held against longitudinal movement in the lower end of the holder by means of: a split internally recessed chuckv 18. The holder 13 has an elongated bore 19 in the upper end thereof, which does not communicate with the recess of the chuck, and is adapted to. contain a supply of extra leads, as at 20, thus the head 9 may be removed from the top closing member 6, and an extra lead may be obtained from the upper portion of the holder 13 by invert ng the pencil. v 1 The portion 15 of the holder bemg'threaded into the bottom end member 5, and the upper portion 12::.-of the holder being extended into and ;;keyed to the top end-member 6, it will be apparent that when the head 9 is turned, the member 6 and the holder 13 will also be turned thereby,and-this rotation of the holder will move the lead chuck 18 longitudinally relative to the member 4.

lead 17 may thus be extended out of theend member 4 'for a desired distance, and when turned to the left, the lead will be retracted and drawn into the end member 4. Itawill be noted that the member 4 is non-rotatable,

and is adapted to be frictionally held againstrotation in the lower end of the body 1, while the upper member 6 is rotatably disposed in the opposite end of the member 1. The extensions 5 and 7, respectively, of the members 4- and 6, are substantially elongated so as to provide bearings of ample length for the holder and, by means of the enlargements l l on the holder and the long bearings is turned to the right, the

mentioned, the lead 17 will be prevented from. breaking for the reason that the holder will be held in concentric relation with the body at all times; also the ointed end of the member 4 should prefera ly be made of a solid piece-of material rather than of sheet metal, so that the bearing for the lead in the point 21 of the member 4' will be of sufficient length to insure against breakage of the leads.

In other forms, of pencils, the lead is moved in the holder and gripping devices are provided in the holder for holding the leads in still other forms, where lead is mova'bly supported in a holder, it must be looselyuse, and where gripping devices are em-.

the lead is frequently cut and broken very easily. In my improved pencil herein;de-

scribed, the lead is inserted in the chuck 18,

portion thereof extended t chuck, and thereafter,

with a sufficient rom the end of 1c the lead and holder placing the lead use. I

ltfwill be observed that my pencil maybe assembled and disassembled readily by removing ,the end members land 6, and access maybe had to the member 4 for renewing the lead in. the chuck by unscrewing the holder 13 from the member 4 by the rotation of the head 9, or, by first removing the member-4 and the holder 13 from the body 1, and then removing the holder therefrom.

In Fig. 2, a short leadis shownin the holder, which be considered to have been extended'ftofits u'pmos't limit, the chuck '18 being firmlyseated in the end of the bore 16, while in Fig 12, ,a long lead. is shown in the holder extended for use, the chuck being substantially retractedwithlin the member 4.

What I claim is;

1. A pencil of" the character described, comprising'a tubular body of uniform diameter and bore throughout the length thereof, 'a' 'conicalbottom member having a bore therein: and a reduced stem-removably insertible injone end' of said =body,a top member having a bore extending therethrough and having" a reducedl Stem rotatablyinsertible in theopposite'end of said body, a lead holder havmg gits lower end threaded are moved together for in and out of position for into fsaid bottom:imember, and a head remow bottom end closures telescopically fitting into said bore, said bottom closure having a,

conical outer end with an opening in the 130 held, and therefore is liable to break during preferably square stem 12 of-"a lea dig .1 20 member. may be the combination with closure, a lead chuck being provided on the a lower end of said holder and said holder being adapted to extend and retract the lead when said top closure is rotated by said head. 7

3. In a pencil of the character described,

a hollow body having closures at the ends thereof, of a lead holder having a threaded portion extensibly held in one of said closures and a key portion slida-bly held in the other of said closures and an enlargement fitting the bore of said body.

4. In a pencil of the character described, the combination with a hollow body having removable end closures therefor, of a lead holder adjustably and extensibly held in said bod and provided with a threaded portion or adjustable relation with one of said closures and a key portion slidably held in the other of said closures, an enlargement being provided on said holder for centering said holder with said body, and a head on said last mentioned closure for adjusting the position of the holder in said body.

Signed at Los Angeles, Los Angeles and State of California, 14th day of June, 1918.

FREDERICK J. YOUNG.

In presence of- H. M. BRUNDAGE, LUTHER L. MACK.

in the county of this 

